Physics WAEC

A projectile of mass 4kg is fired vertically and reaches a maximum height of 1m. Calculate the potential energy at the highest point (g = 10ms−2

A. 1800J
B. 1600J
C. 600J
D. 440J

Correct Answer: Option B

B. 1600J

Explanation

Potential energy at the highest point = mgh
PE = 4 × 10 × 40 = 1600J

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